Improvement in gates



identit uert,

iiitltl @film CHARLES-N. OWEN, OF SALEM,*OE[I0.

Letters Patent No. 112,174, dated February 28, 1871.

IMPRQVEMENT IN GATES.

The Schduie referred to in these Letters Patent and making part of the lame.

A is the gate, which may be of any usual or desired construction; and

B the post, upon which the gate is supported Vby means of hinges B B.

C is a cylindrical case or shell, secured to the gate by means of bolts which pass through ears c upon shell O.

C is a short stud-shaft, the upper end of which projects through the upper face of shell C.

D isa vibrating sweep or arm, mounted upon the projecting end of stud-shaft C', and secured thereto by a nut or its equivalent.

E is a coiled spring placed within shell O, and connected withA said shell and with the stud-shaft C in such manner that a movement of the shaft and the' arm D with the sun, or a reverse movement of the shell, the arm in the meanwhile remaining stationary, will wind up the spring E in a manner which will be readily understood without further explanation. In practice I generally-prefer to make the spring double,

that is, in two parallel strips, coiledone within th other.

F is a chain or. equivalent device, by means of which the free end of arm Dis connected with the post upon which the gate is hinged. i Y

G is athumb-latch pivoted, to the gate at g,- the inner end g1 of this latch is bent downward at a right angle to thehorizontal portion and passes through a guide-box or strap, g". By preference I hinge the part g1 tothe main part or lever, in order to secure a perfect freedom of movement in the guide or way q2;

but this 'may not be essential.

As will be readily seen from the above description, when the gate is opened, as in iig. 1, the tension upon spring Eis increased, Aso that as soon as the gate is released it will be closed, and the arm D will pass behind the lower endA of the vertical arm g1 of latch l Gr. The outer face of that portion of this arm which.

impinges upon the arm D should be chamfered so as to facilitate its rising to admit arm D. parts are in this,position it will be impossible to open thev gate; but the lock can. be instantly released by depressing the i'ont end of the latch and allowing the arm D to escape.

Having now described my invention,

What I claim as new, and desire to secure by Letters Patent, is- In combination with a gate, therspring E, vibrating arm D, chain or link F, and latch G, these parts being arranged for joint operation as set forth.

In testimony whereof I have hereunto set my hand this 14th day of October, A. D. 1870.

C. N. OWEN. Witnesses:

EDWARD KENNETT, THoMAs. KENNEN.

While meA 

